Kangaroo minion drop rate

Hey Ive been running the Highland Explorations for a while, still working on that minion and no joy yet.

Ive checked it on a few websites, says Miner, Highland Exploration 28, 18 hr mission. Is that correct?

Any details on droprate, how often have you seen it? Yes i CAN buy it but Id like to see it in the tender hands of one of my retainers.

Any details welcome.

The RNG of retainer minion is very low, I got lucky on Chewie, Nero Car, and Kangaroo but not on Blue-footed Booby...

I've gotten five cars but only one chewy. :/. No min/fsh retainer.